Stop-motion mechanism for warping machines



June 12, 1923. A. c. MASON STOP MOT ION MECHANISM FOR :WARPING MACHINES ,-1922 2 Sheets-Sheet l Filed Sept 2 IN VE IV TOR A. C. MASON June 112, 1923.

} STOP MOTION MECHANISM FOR WARPING MACHINES Filed Sept. 2, 1922 2 Sheets-Sheet 2 ATOR/VEV Patented June 12, 1823.

nsane ARTHUR C. MASON. 0F HAWTHORNE. NEW JERSEY.

STOP-MOTION .MEGHANISM FOR 'WAEPING MACHINES.

Application filed September 2, 1922. Serial No. 585,924.

To all whom it may concern:

Be it known that I, ARTHUR C. MASON, a citizen of the United States, residing at Hawthorne, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Stop-Motion Mechanisms for l/Varping Machines, of which the following is a specification.

This invention relates to means for detecting the breaking or slackening of a thread or threads of a warp while being advanced, as in warping, for example, in connection with which the invention is herein in fact illustrated and described. The principal objects of the invention are to provide means of this class which shall be compact and simple in construction, reliable in operation, and-adapted to facilitate the operative arrangement in reference thereto of the warp as a whole or of any individual thread on slackening or breakage and consequent repair thereof; The invention contemplates also associating with the detecting mechanism means for stopping the advance of the warp automatically when breakage or slackening of any thread occurs.

In the drawings,

Fig. 1 is a warping machine provided with the improved mechanism, partly in section;

Fig. 2 is a vertical sectional view on line 2-2, Fig. 1;

Fig. 3 is a right shown in Fig. 1;

Fig. 4 is a plan of a detail;

Fig. 5 is a front elevation on a larger scale of the detecting members and of a rotary structure cooperative therewith to stop the advance of the warp;

Fig. 6 is a vertical section of what is shown in Fig. 5

Fig. 7 is a plan of the detecting members, showing in section the structure in which they. are supported;

Fig. 8 is a plan of the warp, showing the detectors in horizontal section and one detector released by breakage of the corresponding thread;

Fig. 9 is a diagrammatic illustration of the means whereby, on breakage or undue slackening of'a thread, the advance of the warp may be stopped; and

Fig. 10 shows a'detail.

a designates the creel for a warping "ma chine and b the usual skewers arranged thereon for the reception of'the rotary bobside elevation of what is front elevation of a creel for a g bins c from which the warpis taken. d is the bar of the creel over which the warp extends from the bobbins and e is'the reed through which the warp is then passed in the usual way.

To the side uprights of the creel are bolted the upstanding brackets 7. These are rigidly connected by two horizontal channeled rails g somewhat spaced from each other. Each rail has a horizontal series of holes 9 formed in the basal portions of its two upright walls so that each hole in the one-wall is directly opposite a similar hole in the other wall, each two such opposed holes forming a bearing for the pivoted detector to be described. The outer wall of each rail has a series of slits or saw-cuts g formed in its top edge, and the inner wall has a series of openings g (appreciably wider than the slits and opposite the same).

Detectors in the form of levers are provided as follows: Each detector includes a rectangular block or body it, a pin or leg h projecting downwardly therefrom, a pin or leg 72 projecting upwardly therefrom, and a laterally extending trunnion if. The detectors are arranged between the two rails Fig. 6) and have their trunnions journaled in the aforementioned holes 9, their pins or legs 7L and h projecting respectively up and down. Each detector has set in a slit in its body it a spring-blade h which plays freely in the corresponding notch 9 but is fixed at its free end in the corresponding saw-cut 9 the spring normally tend- 1 ing to hold the detectors vertical, as indicated by the one which is in that position in Fig. 5. In the construction being explained by way of example there are two sets of detectors, one carried by each rail 9; and those of one set are so arranged that the pins or legs h of one set are staggered with reference to those of the other (Fig. 8). This arrangement will usually be found necessary in order to accommodate all the threads of an ordinary warp. The warp is indicated at A and when it is subjected to tension, as by thereel of a warping machine (only the drive and idle pulleys of which are shown, Fig. 9) pulling against the resistance afforded by the bobbins 0, its various threads hold the several detectors or detector levers tilted (Fig. 5) until one of the threads breaks or unless one or more of the threads becomes unduly slack, whereupon the detector will be returned by the tension of its nection alforded by the engagement of roller 12 in a notch 9 is suificient to overcome the -mere friction between the tongue and said side surface of collar Z. Now when a faller stops the stop-wheel structure the roller 10 will have begun to be cammed by wheel 9 out of the notch 9 with which the roller then registers, but as soon as the clutch is disestablished the (spring-pressed) roller 10 will turn the stop-wheel structure back until said roller is re-seated in the notch. This will leave the stop-wheel clear of the end of the pin k of the detector which coacted therewith, so that it will not be prevented from assuming the tilted position when its thread A is re-tautened. Again, if the machine stops with the clutch disestablished, the tongue of the clutch-connection n being in contact with the smooth side surface of collar Z, the slip-hold means 91O will hold the stop-wheel structure against turning, when the machine is started by pressing on treadle 6, until said tongue can rotate sufficiently to reestablish the clutch connection and thus allow collar Z to assume its normal position and so permit pawl 2 to resume its locking relation to the shifter.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is 1. In combination, with mechanism to advance a warp longitudinally and meanwhile maintain the same taut, a support, and detectors having free ends all projecting in substantially the same direction, said detectors being movable in the support back and forth laterally of the warp and respectively engaged with the threads of the warp, each detector being normally urged in one direction and held by the corresponding thread against such movement and the support affording clearance for shifting the constituent threads of the warp in between and out from between the detectors.

2. In combination, with mechanism to ad-.

vance a warp longitudinally and meanwhile maintain the same taut, a support, and detectors having free ends all projecting in substantially the same direction, said detectors being movable in the support back and forth laterally of the warp and alternating with and respectively bearing sidewise against the threads of the warp, each detector being normally urged in one direction and held by the corresponding thread against such movement and the support affording clearance for shifting the constituent threads of the warp in between and out from between the detectors.

8. In combination, with mechanism to advance a warp longitudinally and meanwhile maintain the same taut, a support, and detectors each movable in the support back and forth laterally of the warp and alternating with and respectively bearing sidewise against the threads of the warp, each detector being normally urged in one direction and held by the corresponding thread against such movement and said detectors forming a comb-like series and the support affording clearance for shifting the constituent threads of the warp in between and out from between the detectors.

4.. In combination, with means to advance a warp longitudinally and meanwhile maintain the same taut, a sup-port, detectors each movable in the support back and forth laterally of the warp and respectively engaged with the threads of the warp, and plate springs each engaged at one end with a detector and at the other with the support and normally urging the detector in one direction, the detectors being held by the warp against the tension of the springs.

5. In combination, means to advance the warp, means to exert resistance on the warp and thus co-act with the first means to maintain the warp taut, a support, a rotary struc ture journaled in the support on an axis extending crosswise of the warp and including a series of stopping members arranged longitudinally of the axis of said structure and spaced from each other, yielding means to transmit rotation to said structure, and detectors each movable back and forth laterally of the warp and respectively engaged with the threads of the warp, each detector projecting between two of said members and normally urged in one direction into the rotary path thereof and held by the corresponding thread against such movement.

6. In combination, mechanism to advance a warp longitudinally and meanwhile maintain the same taut, a support, a rotary structure journaled in the support and including abutment members arranged longitudinally of its axis and spaced from each other, detectors movable back and forth respectively, into and out of and normally urged into the paths of said members, the warp threads being adapted to normally hold said detectors respectively out of said paths, means having a slip-clutch connection with said struc- ARTHUR C. MASON. 

